[pulseaudio-discuss] [PATCH 1/2] pactl: Accept more volume specification formats

[Tanu Kaskinen]

On Thu, 2011-03-24 at 22:22 +0530, Arun Raghavan wrote:
> On Thu, 2011-03-24 at 13:07 +0000, Colin Guthrie wrote:
> > 'Twas brillig, and Maarten Bosmans at 24/03/11 12:44 did gyre and gimble:
> > > 2011/3/24 Maarten Bosmans <mkbosmans at gmail.com>:
> > >> With this you can specify the volume with 6554, 10%, 0.001 or -60dB,
> > >> all resulting in the same volume change.
> > > 
> > > I was also going to add relative volumes, such as +3dB and -5%, by
> > > detecting a + or - sign in the volume. But that clashes with the
> > > absolute dB scale (insofar a dB can ever be absolute) that can also be
> > > negative.
> > > 
> > > Any suggestions for graceful handling of this?
> > 
> > How about if the first letter of the volume change is an "i" or a "d"
> > then this indicated increment or decrement relative volume?
> > 
> > It's not as clean as the +/- labelling sadly but such is life.
> > 
> > Alternatively your absolute dB volumes could be specified as "60-dB" or
> > "7+dB" (where 7dB implies "7+dB")... That way the prefix +/- notation
> > could be used for relative adjustments. The only downside there is that
> > setting absolute dB volumes is more confusing (you'd never need to use
> > anything other than XdB for relative adjustments anyway).
> > 
> > Personally I'd go for the later as I think relative adjustments are
> > probably more common, so it's syntax should be "neatest", but I could be
> > very wrong :D
> 
> Or maybe just do this as a separate set-volume-step command (or
> -increment or something better named)?

I agree - I think a separate command is a good idea. For command naming,
I suggest "increase-sink-volume" and "decrease-sink-volume".

-- 
Tanu